Enjoy Japan’s finest carbonated spring with 100% natural free-flowing water, in a modern therapeutic bathing inn
Oita Taketa City
Bansho no Yu is located in Nagayu Onsen in Taketa City, Oita Prefecture, a hot spring area known for one of the world’s finest carbonated springs. While listening to the murmur of the Seri River, guests can enjoy 100% natural free-flowing spring water with no added heat or water. The signature Bubuku cold plunge bath is a cold mineral spring bath in which rare carbonic ingredients drift as crystals, and alternating between it and the indoor baths can further promote circulation and enhance skin-beautifying effects. The facility also features the world’s first face bath, a restaurant serving seasonal local ingredients, and a lodging wing filled with the warmth of wood. It is a high-quality bathing facility that offers a modern take on therapeutic bathing suited to contemporary lifestyles.
TypeNatural Hot Spring
The spring water of Nagayu Onsen, hailed as Japan’s finest carbonated spring, is used at 100% free-flowing quality without boiling or dilution. Rich in bicarbonate ions, the water is said not only to leave the skin smooth, but also to support health through drinking. In the open-air bath facing the Seri River and the indoor baths with different temperatures, you can experience the power of this renowned spring with your whole body.
Water QualityHot Spring Water
Capacity3people
A cold mineral spring bath rich in the carbonic components unique to Nagayu Onsen. Inside the tub, reddish-brown hot spring mineral flakes drift as crystals, while fresh spring water is constantly flowing in. With an exquisitely balanced temperature that is not too cold, soaking slowly encourages transdermal absorption of carbon dioxide, creating the curious sensation of becoming warm deep inside the body.
Closed Days: None
〒878-0402 Oita Prefecture, Taketa City, Naoiri-machi, Oaza Nagayu 3264-1
Gender Access
Gender Separated
Curated by an expert who visits onsen and sauna facilities every day and has explored 300+ locations — only facilities confirmed to be truly exceptional are featured.
Learn more
Enjoy Japan’s finest carbonated spring with 100% natural free-flowing water, in a modern therapeutic bathing inn
Oita Taketa City
Bansho no Yu is located in Nagayu Onsen in Taketa City, Oita Prefecture, a hot spring area known for one of the world’s finest carbonated springs. While listening to the murmur of the Seri River, guests can enjoy 100% natural free-flowing spring water with no added heat or water. The signature Bubuku cold plunge bath is a cold mineral spring bath in which rare carbonic ingredients drift as crystals, and alternating between it and the indoor baths can further promote circulation and enhance skin-beautifying effects. The facility also features the world’s first face bath, a restaurant serving seasonal local ingredients, and a lodging wing filled with the warmth of wood. It is a high-quality bathing facility that offers a modern take on therapeutic bathing suited to contemporary lifestyles.
TypeNatural Hot Spring
The spring water of Nagayu Onsen, hailed as Japan’s finest carbonated spring, is used at 100% free-flowing quality without boiling or dilution. Rich in bicarbonate ions, the water is said not only to leave the skin smooth, but also to support health through drinking. In the open-air bath facing the Seri River and the indoor baths with different temperatures, you can experience the power of this renowned spring with your whole body.
Water QualityHot Spring Water
Capacity3people
A cold mineral spring bath rich in the carbonic components unique to Nagayu Onsen. Inside the tub, reddish-brown hot spring mineral flakes drift as crystals, while fresh spring water is constantly flowing in. With an exquisitely balanced temperature that is not too cold, soaking slowly encourages transdermal absorption of carbon dioxide, creating the curious sensation of becoming warm deep inside the body.
Closed Days: None
〒878-0402 Oita Prefecture, Taketa City, Naoiri-machi, Oaza Nagayu 3264-1
Gender Access
Gender Separated
Curated by an expert who visits onsen and sauna facilities every day and has explored 300+ locations — only facilities confirmed to be truly exceptional are featured.
Learn more